Finding the Fourth Proportional to 1,620.95, 2,426.72 and 1,036.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620.95 : 2,426.72 = 1,036.62 : x
2. Step 2: Convert to fraction form
   1,620.95/2,426.72 = 1,036.62/x
3. Step 3: Cross multiply
   1,620.95x = 2,426.72 × 1,036.62
4. Step 4: Simplify right side
   1,620.95x = 2,515,581.30
5. Step 5: Solve for x
   x = 2,515,581.30/1,620.95
6. Step 6: Final answer
   x = 1,551.92